Malicious Office (OLE) / .DOCX — malware analysis report

Static analysis result for SHA-256 2d2746779349a04d…

MALICIOUS

Office (OLE) / .DOCX

88.8 KB Created: 2018-08-27 21:45:00 Authoring application: Microsoft Office Word
MD5: f8daf504dd32acf2df3f0b428f94eccf SHA-1: 25a55430a8813e9c559d1e2e9d92fc29fff05925 SHA-256: 2d2746779349a04d4312d05f4c19b40b9c4b7eb80f7c4d99199be07b0497e970
260 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample contains VBA macros, specifically an AutoOpen macro that utilizes the Shell() function. This indicates an attempt to execute arbitrary code upon opening the document. The presence of 'macros.bas' and the AutoOpen heuristic strongly suggest a macro-based execution flow. The ClamAV detection further supports its malicious nature.

Heuristics 7

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • ClamAV: Doc.Malware.Valyria-6797106-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Valyria-6797106-0
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
5f945b79502c5431a9491f01c84d2d73395ae37651d609a13ec4624703f5ea50		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10425 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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